1: # The LearningOnline Network with CAPA
2: # random labelling tool
3: # 7/20/2001 Isaac Tsai
4: # 8/10/2001 Isaac Tsai
5: # SYNTAX:
6: # <randomlabel bgimg=URL code=JAVACLASS codebase=URL width=12 height=45>
7: # <labelgroup name=GroupOne type=img>
8: # <location x=123 y=456 />
9: # <location x=321 y=654 />
10: # <location x=213 y=546 />
11: # <label>IMG-URL</label>
12: # <label>IMG-URL</label>
13: # <label>IMG-URL</label>
14: # </labelgroup>
15: # <labelgroup name=GroupTwo type=text>
16: # <location x=12 y=45 />
17: # <location x=32 y=65 />
18: # <location x=21 y=54 />
19: # <label>TEXT</label>
20: # <label>TEXT</label>
21: # <label>TEXT</label>
22: # </labelgroup>
23: # </randomlabel>
24: # ===========================================
25: # location (123,456): $GroupOne[1] = ...
26: # (321,654): $GroupOne[2] = ...
27: # (213,546): $GroupOne[3] = ...
28: # location (12,45) : $GroupOne[1] = ...
29: # (321,654): $GroupOne[2] = ...
30: # (213,546): $GroupOne[3] = ...
31: # ===========================================
32: package Apache::randomlabel;
33: use strict;
34:
35: sub BEGIN {
36: &Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label'));
37: }
38:
39: sub start_randomlabel {
40: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
41: my $result='';
42: my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
43: my $code = &Apache::lonxml::get_param('code',$parstack,$safeeval);
44: my $codebase = &Apache::lonxml::get_param('codebase',$parstack,$safeeval);
45: my $w= &Apache::lonxml::get_param('width',$parstack,$safeeval);
46: my $h= &Apache::lonxml::get_param('height',$parstack,$safeeval);
47:
48: $result.="<applet code=$code codebase=$codebase width=\"$w\" height=\"$h\">";
49: $result.="<param name=\"bgimg\" value=\"$bgimg\">";
50: if ($target eq 'edit') {
51: }
52: if ($target eq 'modified') {
53: }
54: return $result;
55: }
56:
57: sub end_randomlabel {
58: return '</applet><BR />';
59: }
60:
61: sub start_labelgroup {
62: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
63: my $result='';
64: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
65: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
66: $Apache::randomlabel::groupname=$name;
67: @Apache::randomlabel::xcoord = ();
68: @Apache::randomlabel::ycoord = ();
69: @Apache::randomlabel::label_arr = ();
70: return '';
71: }
72:
73: # begin to assign labels to locations
74: sub end_labelgroup {
75: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
76: my $gname = $Apache::randomlabel::groupname;
77: my $count = $#Apache::randomlabel::label_arr + 1;
78: my $code;
79: my $out;
80: my $label;
81: my $x;
82: my $y;
83: my $text= "<param name=\"count\" value=\"$count\">";
84:
85: my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
86: &Apache::structuretags::shuffle(\@idx_arr);
87: for(0 .. $#Apache::randomlabel::label_arr) {
88: $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
89: $x = pop @Apache::randomlabel::xcoord;
90: $y = pop @Apache::randomlabel::ycoord;
91: $text .= "<param name=\"LB". $_ . "\" value=\"$label\">";
92: $text .= "<param name=\"X" . $_ . "\" value=\"$x\"> ";
93: $text .= "<param name=\"Y" . $_ . "\" value=\"$y\">";
94: $code = "push(\@$gname, $label);" ;
95: # print("CODE=$code");
96: # $out=Apache::run::run($code,$safeeval,$$parstack[$#$parstack]);
97: $out=Apache::run::run($code,$safeeval);
98: }
99:
100: return $text;
101: }
102:
103: sub start_location {
104: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
105: my $x= &Apache::lonxml::get_param('x',$parstack,$safeeval);
106: my $y= &Apache::lonxml::get_param('y',$parstack,$safeeval);
107:
108: push(@Apache::randomlabel::xcoord,$x);
109: push(@Apache::randomlabel::ycoord,$y);
110: return '';
111: }
112:
113: sub end_location {
114: return '';
115: }
116:
117: sub start_label {
118: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
119: my $ltext=&Apache::lonxml::get_all_text("/label",$$parser[$#$parser]);
120:
121: push(@Apache::randomlabel::label_arr,$ltext);
122: return '';
123: }
124:
125: sub end_label {
126: return '';
127: }
128:
129:
130:
131: 1;
132: __END__
133:
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